Introduction: At the present moment, the growing rate of divorce is one of the most important and alarming issues in society. The main purpose of the study was to survey the causes of marital conflict during marriage from the viewpoint of the men and women who were referred to Family Court. Method: The research was carried out through a qualitative content analysis with a conventional method, and purposive sampling. Semi-structured in-depth interviews were conducted on 32 couples referred to the Family Court. Moreover, for the confirmation and completion of data, the judges were interviewed and the available documents studied. Results: Data analysis yielded the 3 main categories of individual issues, relationship of the couples, and society. These categories were considered as the causes of marital conflict. Conclusion: The reduction in the rate of marital conflicts, and consequently, divorce necessitates the solving of issue in every one of the abovementioned categories. Due to the role of social damages in divorce, authorities must take action to resolve these issues. Moreover, by providing mandatory premarital counseling and life skills training for couples, and considering the cultural and social aspects of the couples, many cases of divorce can be prevented.